Active vibration control simulation and experiment studies of underwater structures based on a reduced order model
YU Danzhu, LI Sheng
State Key Laboratory of Structural Analysis for Industrial Equipment, Faculty of Vehicle Engineering and Mechanics, School of Naval Architecture, Dalian University of Technology, Dalian 116024, China
Abstract：In order to effectively suppress vibration of an underwater structure, its active vibration control simulation and experiment studies were implemented based on a reduced order model. The compressible fluid-loaded undamped modal matrix was used to build the reduced order model of the underwater structure. Due to dimension number’s reduction, a simplified vibration active control system was designed to decrease the number of sensors and actuators. Active control of
underwater structural vibration of a plate was simulated with the linear quadratic（LQ）control method and the variable stiffness control method, respectively. The simulation results showed that the plate’s vibration amplitude is quite well controlled with the LQ control method, while the natural frequencies of the plate can be changed according to requirements with the variable stiffness control method; based on the reduced order model, the active control is relatively easy to implement and the experimental results verifies the vibration reduction effects of active control technique on underwater structures.
于丹竹，黎 胜. 基于降阶模型的水下结构振动主动控制仿真及实验研究[J]. 振动与冲击, 2017, 36(3): 70-76.
YU Danzhu, LI Sheng. Active vibration control simulation and experiment studies of underwater structures based on a reduced order model. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(3): 70-76.
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